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All Aquasystem expansion vessels are supplied with a replaceable membrane, which separates the water and air, to prevent contamination of the water system, corrosion of the expansion vessel or pressure loss in the water system.

The main purpose of an expansion vessel is to compensate for the increase in volume of water due to the varying water temperatures in hot water or heating systems. When water is heated it expands and as water is not compressible this increased volume will create a rise in pressure within the system. As an example, water being heated from 0°C-100°C will increase by approx 4.5%.

The expansion vessel allows for this extra space, as when water temperature increases the membrane inside the vessel inflates to allow the water to fill the vessel. The membrane will continue to expand until the system reaches its maximum temperature. Once this has been reached the membrane will be fully inflated and takes up the capacity of the vessel shell. Gradually the temperature will drop, which will in turn decrease the volume of water. Due to the pressure from the pressurised air surrounding the membrane, water will start to exit the vessel until the membrane is deflated.

Vessel can be serviced without being removed due to replaceable membrane.

Vessel has pre-charged valve for topping up air pressure.

Vessel Size Guide:

Vessel Capacity:

Vessel Dimensions:

2 Litre

Height: 265mm Diameter: 110mm

8 Litre

Height: 310mm Diameter: 200mm

12 Litre

Height: 295mm Diameter: 280mm

18 Litre

Height: 465mm Diameter: 280mm

24 Litre

Height: 492mm Diameter: 280mm

35 Litre

Height: 440mm Diameter: 365mm

Additional Information

Manufacturers Code

XVES050030

SKU

9803733

Brand

Reliance Water Controls

Condition

New

EAN

5060380358349

Reliance - Aquasystem 8 Litre Potable Expansion Vessel & Bracket XVES050030.
Reliance - Aquasystem 8 Litre Potable Expansion Vessel & Bracket XVES050030
Dimensions:
H x 316mm - D x 200mm
Fittings:
3/4 inch
All Aquasystem expansion vessels are supplied with a replaceable membrane, which separates the water and air, to prevent contamination of the water system, corrosion of the expansion vessel or pressure loss in the water system.
The main purpose of an expansion vessel is to compensate for the increase in volume of water due to the varying water temperatures in hot water or heating systems. When water is heated it expands and as water is not compressible this increased volume will create a rise in pressure within the system. As an example, water being heated from 0°C-100°C will increase by approx 4.5%.
The expansion vessel allows for this extra space, as when water temperature increases the membrane inside the vessel inflates to allow the water to fill the vessel. The membrane will continue to expand until the system reaches its maximum temperature. Once this has been reached the membrane will be fully inflated and takes up the capacity of the vessel shell. Gradually the temperature will drop, which will in turn decrease the volume of water. Due to the pressure from the pressurised air surrounding the membrane, water will start to exit the vessel until the membrane is deflated.
Options Include:
Reliance Aquasystem Replaceable Membrane 2,8,12,18,24 Litre Heating Expansion Vessel
Reliance Easifit Sealed System Kit
Exansion Vessel Mounting Bracket
Features:
Stainless steel bolted flange prevents corrosion.
Extra wide membrane opening prevents noise caused by restricted flow.
Internal membrane preventing water contact with the steel shell, stopping internal corrosion.
Vessel can be serviced without being removed due to replaceable membrane.
Vessel has pre-charged valve for topping up air pressure.
Vessel Size Guide:
Vessel Capacity:Vessel Dimensions:
2 Litre
Height: 265mm Diameter: 110mm
8 Litre
Height: 310mm Diameter: 200mm
12 Litre
Height: 295mm Diameter: 280mm
18 Litre
Height: 465mm Diameter: 280mm
24 Litre
Height: 492mm Diameter: 280mm
35 Litre
Height: 440mm Diameter: 365mm